Printing starts too high.

Hello everyone, it's me again.

I have a second Ormerod, a green one.
I am having difficulties with this printer aswell.
My red one is up and running, all thanks to your help.
Now I am having trouble with my second Ormerod, I have the latest firmware and mechanically it is perfect.

All the commisioning steps went perfectly, That was great. Then after running the circle.g I want to print the orthogonal calibration print.
All goes well, until right after the second M116 command.
I starts after this wait all temperatures command and the nozzle goes up(!) about 2 to 5mm and starts extruding at this height.

I have tried reinstalling the entire firmware, replaced the SD card, ran the manual and automatic bed plane compensation numerous times but it still just keeps dropping the filament from a height.

Does anyone have an idea or do you need more information on what I am doing.

Thansk!!!

Davaka

Post the lines of code you are referring to or a link to the Gcode file. This will be a good starting bit of info.

1. How are you homing the z-axis: automatically, or manually and then doing G92 Z0 ?

2. Are you running the automatic bed compensation, or have you set manual bed compensation parameters, or neither?

3. If you do everything you normally do just before a print, and then instead of printing you do G0 X100 Y100 and then G0 Z0, does it put the nozzle just above the bed?

---

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

Thanks for the replies,

1. I am homing the Z axis manually, by entering G92 Z0 before a print.

2 I have tried the G32 on the tags, and set the compensation manually aswell,
The probe points were as follows;
G30 P0 X60 Y35 Z0
G30 P1 X60 Y170 Z0.2
G30 P2 X180 Y170 Z0
G30 P3 X180 Y35 Z-0.3
Should be well within tolerance.

3. When I give these commands it goes right up to the board.

The code I am trying to run is as follows.
This is only the beginning though, the entire file is somewhat lengthy.

; generated by Slic3r 0.9.10b on 2013-11-15 at 21:34:14


; layer_height = 0.24

; perimeters = 2

; top_solid_layers = 4

; bottom_solid_layers = 3

; fill_density = 0.4

; perimeter_speed = 20

; infill_speed = 20

; travel_speed = 60

; nozzle_diameter = 0.5

; filament_diameter = 1.75

; extrusion_multiplier = 1

; perimeters extrusion width = 0.85mm

; infill extrusion width = 0.87mm

; solid infill extrusion width = 0.85mm

; top infill extrusion width = 0.85mm

; first layer extrusion width = 0.48mm

G21 
; set units to millimeters

G90 ; use absolute coordinates

M83 ; use relative distances for extrusion

M140 S65; Set bed temperature

G1 Z5 F200 ; lift nozzle

G1 X2 Y50 F2000; Go to wait for warm position

M116; Wait for all temperatures

G10 P0 S205 R0 ; Set extruder temperature

T0; Select extruder

M116; Wait for all temperatures

G1 F1800.000 E-1.00000

G1 X47.463 Y43.710

G1 Z0.240 F3600.000

G1 F1800.000 E1.00000

G1 X48.473 Y42.780 F600.000 E0.06635

G1 X49.653 Y42.090 E0.06605

G1 X50.963 Y41.660 E0.06663

G1 X52.323 Y41.520 E0.06607

G1 X142.333 Y41.520 E4.34954

G1 X143.703 Y41.660 E0.06655

G1 X145.003 Y42.090 E0.06617

G1 X146.183 Y42.790 E0.06630

G1 X147.203 Y43.710 E0.06638

Exactly the same problem!

And one extra: Filament is moved forward and backward but will not print. The extruder is mechanically fine.

What firmware version does it report in response to M115?

I notice that your slic3r settings look like the original Ormerod ones. Your extruder temp is about 10C too high. I use 195C first layer and 190C remaining layers, and some folks use lower. Also you will get better results if you increase retraction to 4mm. But I don't know what is causing it to print 5mm too high, assuming you haven't changed the max speed settings. The command "G1 Z0.240 F3600.000" to lower the nozzle specifies an impossibly large speed for the Z axis, but the firmware should apply a limit. As an experiment, you could try editing that line to "G1 Z0.240 F180".

---

Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

Thanks dc42,

This is indeed the ormaxis.g file from the original firmware.
In slic3r I have changed the nozzle temperature to 195 for each layer already.
This was a tip I read before commisioning this printer.
The firmware reported by M115 is RepRapFirmware
FIRMWARE_VERSION:0.57a ELECTRONICSuet DATE:2014-01-16
This should be the latest version.
I will try to change the speed in the gCode, see if that helps.
I will report back later.

**EDIT**
We';ve got i to work. Smoothly and nicely.
Appearently there are some issues with the gcodes provided with the firmware.
I have printed my own slices and that works great,

is the orthogonal comensation really nessecary?
I've done it with my RS red ormerod and I did not find ANY deviation from the triangle provided.

Thanks again for all your support.

Edited 1 time(s). Last edit at 02/25/2014 02:09PM by Davaka.